Engine



vENGINE A. MONSEN .Filed Sept 8, 1919 `Nar.,6,1923.

Patented alia. e, reas.

1;, 'appese vnave-rina- T0, dell 'who/n, z'/ may concern: V

citizen of .the 'United States,y .residing-.1156' Logansport, in thecounty of Cass andtatef. .of Indiana, have invented .certain11e/W anduseful improvements in Engines, ,of .which the following is aspecification.

The invention rel-ate'sfstoimprovements in engines and has especialreference to the betterment of the crank case of engines of the internalcombustion type.y ,f

Une of the objects of the? invention is to provide an automatic seal forthe aperture thru which the startingcrank of the-engine usually extends,operable upon the withdrawal of the starting crank, to prevent oil ffrom leaking thru the aperture. Y

Another object of the invention is to interpose a spring-impelledstarting dog, between the crank shaft of the engine and the startingcrank`r which automatically disconnects itself from the engineshaft-when the start ing` crank is withdrawn and which, at the sametime. automatically closes the aperture in which the dogisaxially'movable by 0peration of a suitable valve.

Other, further and more specific objects of the invention will becomereadily apparent. to persons skilled in the art, from a consideration ofthe following description when taken in conjunction with theaccompanying drawing. f .Y

ln the drawing 1. represents afpower or crank shaft of the engine,having bearings 2 in the crank vcasing 3; 4 is the crank-of the engineshaft. The end of the shaft 5 is reduced in size and supports a gear orsprocket wheel 6, it being secured thereto by a key 7 and a nut Sthreaded over the portion 9 `of the shaft. The shaft is further reduced.as at 10, and transversely positioned pin 11 extends thru the shaft toforni a clutch member. 12 may be either a gear, meshing with the gear 6,or it may be a belt for transmitting the power from the power shaft 1 tothe usual valve shaft, not shown in the drawing. A casing 13,' forcontaining` the train of Q ;earing that connects the power shaft withthe valve shaft, is secured to the crank casing 3, by screws 14, or theylike. A bearing and support for the starting dog or clutch member 15consists of a hub portion 16, within which thedog 15 is axially movable,and a fianged portiony 17 j thru j. spring; :203 i ds which bolts ypass,to connect the. Structure shoulder, enthe .othevend- 1 of; fthevsning-The inner end: of the dog 15'is perforated.

*Gand which anlpennlleleal led.- hie ,outell-jend ofthe degat-115 :is.provi-ded ,Withaf headffl, erhielt may hejcoirlposedrof@threadedringsora-tuts,

as at 24, to receive the reduced end lOofthe f power shaft 1. 'Thelarger portion surn rounding the perforation inthe `dog is p rovidedwith'a notch 25, to receive the 'pin'-11" that projects laterally fromthereduced end l 10 of the power shaft. Near the inner end of the dog 15is la leather ring or washer to provide a valve 26 held against asurface-27 bounding` the orifice. 28 thru which the dog i 15 passes.Thespring 20 yieldingly holdsl the valve 26 on its seat or in contactwith the seator surface 27 which bounds'the orice. The outer end of thedog 15 is perforated, as at 28 to receive the reduced end l30v ofthestarting crank, 31." -A- pin 32 passes thru the reduced endr of thestarting crank and isreceived in a notch 33 yof the dog 15'. 34 is abearing thru which the end of the startingcrank 31 is passed andwhichsup- Q' ports the crank during the starting opera tion of theengine', effected by the instru-"k mentality of the crank.

-Theoperation of lthe vdevice iseasily understood. The lcrank 31 isplaced in the orificeL provided vhy'the support 34 andis moved axiallyuntil the pin 32 enters thel notch 33 of the dog 15, whereupon furtherinward movement of the crank and dog vieldingly-opposed by the spring,will causel the notch 25 to encompass the opposite ends of the pin 11that passes thru the reduced -end 10 ofthe power shaft. ``When the partsare .in place, as described,` thecrank 31 isk rotated until the engineis started wherebe contained Iinthe casing13 can not leakl thru theorifice within which While l `have herein showna single leinbodiment ofmyv invention for the purpose uponthe withdrawal of the crank will re!of clear-disclosure, it will be manifest to perl sons skilled in the artthat changes may be made in the general arrangement' and configurationof the parts Within the scope of the appended claims.'

Having described my invention, what I claim iszl. In a device of thecharacter described the combination of a closed easing; a shaft therein,to be rotated7 terminating near an outer Wall of the easing, 4saidouter-'Wall havingan opening in line with the shaft; a clutch member onthe end of the shaft; an axially movable plug in said opening, coaxiallyarranged vwith the shaft; a clutch member on the end of the plugtovrotatably engage the clutch member on'the shaft when the plug is movedinwardly; a spring to yieldingly hold the plug in its outward po sition;a packing member movable Withthe ing an opening in line with the shaft;a

hollow hub secured to said Wall over the opening; a plug axiallyslidable Within said hub and having a clutch member on each end thereof;a spring surrounding the hub and plug to yieldingly hold lthe plug inoutward position anda packing ring movable With the plug yto seal theopening by operation of the spring.

In testimony whereof scribed my name.y

ADOLPH MONSEN.

I 'hereunto sub-`

